Photoluminescence Measurements from the Two Polar Faces of ZnO

Authors

R. E. SherriffFollow
D. C. ReynoldsFollow
David C. Look, Wright State University - Main CampusFollow
B. Jogai
J. E. Hoelscher
T. C. Collins
G. CantwellFollow
W. C. Harsch

Document Type

Article

Publication Date

9-1-2000

Abstract

The crystal structure of ZnO is wurtzite and the stacking sequence of atomic layers along the “c” axis is not symmetric. As a result, a ZnO crystal surface that is normal to the c axis exposes one of two distinct polar faces, with (0001̄) being considered the O face and (0001) the Zn face. Photoluminescence (PL) measurements on the two faces reveal a striking difference. Two transitions are observed in PL that are dominant from the O face and barely observed in PL from the Zn face. These lines are identified as phonon replicas of a particular D⁰,X transition using energy separations, excitation dependence, and time-resolved PL measurements. In addition, PL emission from free excitons is found to be more intense from the O face than from the Zn face.

Comments

Copyright © 2000, American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in the Journal of Applied Physics 88.6, and may be found at http://jap.aip.org/resource/1/japiau/v88/i6/p3454_s1

Repository Citation

Sherriff, R. E., Reynolds, D. C., Look, D. C., Jogai, B., Hoelscher, J. E., Collins, T. C., Cantwell, G., & Harsch, W. C. (2000). Photoluminescence Measurements from the Two Polar Faces of ZnO. Journal of Applied Physics, 88 (6), 3454-3457.
https://corescholar.libraries.wright.edu/physics/144

DOI

10.1063/1.1288159